Proc. Roy. Socy. of Ed/in.} 
[Yol. XXX. 
Fig. 2. — A, notochord ; B, aorta ; C, sym- 
pathetic nerve cells and fibres at the side and 
in front of aorta. (Seventh day.) 
Fig. 4. — Cross section through the lower portion 
of the trunk of a chick, showing the lower sym- 
pathetic and (A) Remak’s intestinal nerve. 
(Seventh day.) 
x 250. 
Fig. 1. — Sympathetic nerve cells and fibres 
lying in the mesentery. (Sixth day.) 
Fig. 3. — Sympathetic nerve fibres in 
mesentery ; gut wall below. (Seventh day.) 
Dr Williamina Abel 
[Plate II. 
